Blue street lights are believed to be useful in preventing suicides and street crime, a finding that is encouraging an increasing number of railway companies to install blue-light-emitting apparatus at stations to prevent people from committing suicide by jumping in front of trains.

2000 - in Glasgow, Scotland, the number of street crimes in areas illuminated in blue noticeably decreased.

2005 - Nara prefecture, Japan, crime rates dropped about 9% in the blue-illuminated neighborhoods set up by the prefectural police in 2005.

According to the company, a few people attempt to commit suicide every year at the station. Since the blue lighting was introduced, no suicide attempts have occurred at the station.

Professor Tsuneo Suzuki at Keio University said: “There are a number of pieces of data to prove blue has a calming effect upon people. But It’s a little risky to believe that the color of lighting can prevent anything.”